Preparation Characterization and Study Thermal Properties of New Aromatie Polyester Based on Di Hydroxyl Monomers With 4,4-Azo Di Benzoic Acid Maleic Acid and Phthalic Acid. JUBPAS [Internet]. 2018 Feb. 28 [cited 2024 May 19];26(2):73-9. Available from: https://journalofbabylon.com/index.php/JUBPAS/article/view/823